Springfield, IL – Illinois homeowners are being urged to clear snow and ice from furnace and exterior home vents today as winter conditions continue across the state. The reminder comes directly from the Illinois State Fire Marshal, who warned that blocked vents can cause dangerous carbon monoxide (CO) to accumulate indoors, creating an immediate safety hazard.
According to the Illinois State Fire Marshal’s Office, snowdrifts and ice can easily block low-lying furnace exhaust vents, especially following heavy or blowing snowfall. When these vents are obstructed, furnaces and other fuel-burning appliances cannot properly release exhaust gases, increasing the risk of CO buildup—a colorless, odorless gas that can be deadly.
The agency emphasized that residents should inspect vents around the perimeter of their homes regularly, particularly after plowing, drifting, or refreezing events. Officials also recommended checking dryer vents and exhaust outlets for the same risks.
Carbon monoxide poisoning is most common during cold-weather months, when heating systems run continuously and homes remain tightly sealed. “Clearing exterior vents is one of the simplest steps residents can take to protect their families,” the agency noted in its safety reminder.
Residents are encouraged to install working CO detectors on every level of their home and to test alarms frequently. Anyone experiencing symptoms such as headache, dizziness, nausea, or confusion should leave the home immediately and call 911.
This latest safety alert comes as Illinois prepares for more winter weather this week, increasing the likelihood of additional vent blockages.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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